1.1 CMC Exam Format, Eligibility, Fees & Scoring

CMC Is a Subspecialty, Not a Standalone Credential

Cardiac Medicine Certification (CMC) is a subspecialty certification granted by AACN Certification Corporation to nurses who already hold an accredited clinical nursing specialty certification and who care for acutely and critically ill adult cardiac patients. The credential attaches to that existing certification and is written that way in your signature block: CCRN-CMC, PCCN-CMC, CCNS-CMC. If the underlying specialty certification lapses or goes inactive, you are no longer authorized to use CMC even when your CMC itself is current. That single rule catches more certificants at renewal than any content deficiency does at the exam.

Exam Format

The 15 pretest items are indistinguishable from scored items and are scattered through the exam. Do not try to spot them; treat every item as scored. At roughly 80 seconds per item there is no room for prolonged deliberation, and CMC items are built for that pace: short clinical vignettes asking for a single best nursing action, interpretation, or anticipated finding rather than multi-step calculation.

Why There Is No Ethics Domain

Every AACN certification exam is organized around the AACN Synergy Model for Patient Care, which describes eight nurse competencies (clinical judgment, advocacy and moral agency, caring practices, collaboration, systems thinking, response to diversity, facilitation of learning, and clinical inquiry). CCRN and PCCN sample across those competencies. CMC does not. AACN states that 100% of the CMC exam focuses on the clinical judgment component, and it explains why: the prerequisite clinical specialty certification is required precisely because it has already tested professional caring and ethical practice, so CMC does not retest them.

Two practical consequences for your prep:

• Do not study Synergy Model theory, moral-agency scenarios, delegation frameworks, or the eight nurse characteristics. They are not on this exam, and study products that include them are recycled CCRN material.
• Do not study cardiac surgery as a domain. Postoperative coronary artery bypass and valve-surgery management is the separate CSC (Cardiac Surgery Certification) exam. Surgical content appears on CMC only where it intersects a named CMC test-plan item, such as a post-intervention vascular complication, a pericardial effusion, or a coagulopathy, and never as its own body of content.

Eligibility: Licensure, Certification and Practice Hours

Three gates must all be open on the day you apply.

1. Licensure. A current, unencumbered US RN or APRN license, which for AACN includes the District of Columbia and the US territories of Guam, the Virgin Islands, American Samoa and the Northern Mariana Islands. AACN's definition of unencumbered is stricter than many boards of nursing: the license must not be subject to formal board discipline and must carry no provision or condition that limits practice. Direct-supervision requirements, drug-administration limits and practice-area exclusions all count as encumbrance even when your board does not call them discipline. Candidates and certificants must notify AACN within 30 days if any provision or condition is placed on a license.

2. A current clinical nursing specialty certification. This is the gate applicants most often overlook. The prerequisite certification must (a) involve direct care of adult patients, (b) be nationally accredited by ABSNC (American Board of Specialty Nursing Certification) or NCCA (National Commission for Certifying Agencies), and (c) test beyond clinical judgment to include professional caring and ethical practice as outlined in the Synergy Model. AACN's list of acceptable examples is explicitly non-exhaustive:

Pediatric and neonatal certifications do not qualify, because CMC is an adult-population subspecialty.

3. Practice hours. Document whichever option your record supports:

Three rules decide almost every borderline case:

• Orientation hours count only when you hold the assignment. Hours spent shadowing or working alongside another nurse who is the one with the patient assignment cannot be counted. Hours during orientation in which you are the assigned nurse providing direct care to acutely or critically ill adult cardiac patients do count.
• Hours must be earned in a US-based or Canada-based facility, or in a facility determined comparable to the US standard of acute and critical care nursing practice as evidenced by Magnet designation or Joint Commission International (JCI) accreditation.
• Managers, educators, APRNs and preceptors may apply supervisory hours spent with nursing students or nurses at the bedside, but only when actively involved in caring for cardiac patients, for example demonstrating how to measure pulmonary artery pressures or supervising a new employee performing a procedure.

You must supply the name and contact information of a professional associate for verification: your clinical supervisor, or an RN or physician colleague with whom you work. If your application is selected for audit, that associate must verify your hours in writing.

Fees, Testing Logistics, Scoring and Renewal

Fees

Fees are payable in US funds and are subject to change without notice, so confirm current amounts at aacn.org before applying. AACN membership costs less than the $90 nonmember surcharge on the initial exam, which makes joining first the cheaper route for almost everyone. Group discounts exist for 10 or more applications submitted together, and employers can prepurchase exam vouchers at a further discount. Online applications are processed the same day; paper applications take 2 to 4 weeks and are required for group testing, paper-and-pencil exams and testing outside the US.

Scheduling and Score Reporting

After a successful application, AACN emails a confirmation containing your eligibility period, normally a 90-day window but currently extended to 180 days. You then choose between a PSI testing center and live remote proctoring from a quiet, private location. Use the legal name that matches your photo identification, because it will be checked at entry and printed on your certificate.

For computer-based testing, results appear on-screen immediately at the end of the exam, and a detailed score report is emailed within 24 hours. Paper-and-pencil results arrive by mail in 6 to 8 weeks. Wall certificates ship approximately 4 to 6 weeks after testing, and you can self-print a certificate from your AACN dashboard sooner.

How the Exam Is Scored

CMC is criterion-referenced, not curved against other candidates. A panel of subject-matter experts called the Score Evaluation Committee (SEC) reviews every exam question and rates the basic level of knowledge or skill expected of a minimally competent CMC nurse, using the modified Angoff method. Under the guidance of a psychometrician, those difficulty ratings are aggregated into a recommended passing point that AACN Certification Corporation reviews and approves.

Two consequences matter for how you prepare:

• AACN publishes the cut score as a raw number of scored items, not a percentage. For CMC it is 50 of the 75 scored items, effective 06/01/2022 (AACN, Certification Exam Statistics and Cut Scores). Because 15 of the 90 items are unscored pretest questions, 50/75 works out to about 67% of scored items — but treat the raw number as the target, since AACN explicitly warns the passing score "is not a percentage" and may change when exam forms are re-equated for difficulty.
• AACN also publishes annual first-time pass rates. CMC first-time pass rates were 71.31% in 2025 (1,593 candidates), 71.50% in 2024 (1,262), and 82.80% in 2023 (1,002). Do not confuse the pass rate with the passing score — they are different numbers, and AACN says so explicitly. The pass rate describes how other candidates performed; it tells you nothing about how many items you personally need. Aim at competence across the whole test plan instead.
• Because the standard is criterion-referenced, other candidates' performance is irrelevant. AACN's own wording: all individuals who pass the exam, regardless of their score, have demonstrated an acceptable level of knowledge.

You may apply for and take the same AACN certification exam up to four times in a rolling 12-month period; after 12 months a new honor statement is required.

Certification Period and Renewal

CMC is granted for 3 years. The period begins on the first day of the month in which you pass and ends three years later, so a February 2026 pass certifies you from February 1, 2026 through January 31, 2029. You have up to 90 days beyond the expiration date to complete the renewal transaction, but practice hours and CERPs must have been earned inside the 3-year period; nothing accumulated during the grace period counts.

Every renewal option also requires a current unencumbered license and a current qualifying clinical nursing specialty certification meeting the same ABSNC/NCCA criteria as initial eligibility. Renewal notifications begin arriving by email 4 months before your renewal date and online renewal opens at the same point, but responsibility for renewing on time is yours whether or not the notification reaches you.